In January 1942, Adolf Hitler appoints Fedor von Bock to command Army Group South and supervise Operation Blau. The German forces advance in the south of Russia, scattering the Soviets and approaching Stalingrad, that seems on the verge of falling to the enemy's hands. The movie ends with Vasily Chuikov assuming command of the 62nd Army at September.

The Germans attack Stalingrad, and are engaged in close-quarters combat within the city. Chuikov's soldiers manage to hold on to their positions; On 19 November 1942, the Red Army launches a successful counter-offensive and encircles the Wehrmacht formations. In February 1943, the German 6th Army surrenders to the Soviets.